For Goodson honing machines or portable hones. Set has 4 pieces: 2 holders with integral stones (2-13/16″ L abrasive), and 2 holders with full-length aluminum wipers.
- Range: 2.7″ to 4.1″
- Use: Short and Blind Holes
- Finish: 32 Ra
- Similar to Sunnen M27-J55-71